Arrangement for doctoring a belt or a soft roll surfacing in...

Details Arrangement for doctoring a belt or a soft roll surfacing in... Arrangement for doctoring a belt or a soft roll surfacing in...

2006-04-25

2006-04-25

Hug, Eric (Department: 1731)

Paper making and fiber liberation

Apparatus

Web creping or crinkling type

C162S272000, C162S282000, C118S413000, C015S256500, C015S256510

Reexamination Certificate

active

07033459

ABSTRACT:
An arrangement for doctoring a belt or a soft roll surfacing in a paper or board machine includes a doctor set in connection with a surface with a doctor blade fitted in it for doctoring the surface. The doctor blade is at least partly of a material, the hardness of which is essentially equal to or less than the hardness of the material of the surface, in order to prevent the doctor blade from cutting into the surface. The material is arranged to form a layer extending over the entire width of the doctor blade, and the thickness of which throughout is at least half of the thickness of the doctor blade. A support construction is arranged in the doctor blade, which together with the layer is arranged to form the doctor blade.

REFERENCES:
patent: 3703019 (1972-11-01), Bratt
patent: 3793140 (1974-02-01), Corbellini
patent: 4895071 (1990-01-01), Benton
patent: 4957045 (1990-09-01), Messerschmitt
patent: 4978999 (1990-12-01), Frankel et al.
patent: 5863329 (1999-01-01), Yamanouchi
patent: 6312520 (2001-11-01), Eriksson et al.
patent: 11100790 (1999-04-01), None
patent: 11-256493 (1999-09-01), None
patent: 11256493 (1999-09-01), None
patent: 1745802 (1992-07-01), None
patent: 99/64674 (1999-12-01), None

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